CorrlensCorrlens
Correlate

Correlation Analysis

Alphabet Inc. Class C Capital Stock vs Comcast Corp

GOOG vs CMCSA

-0.497

Moderate inverse

When one moves up, the other tends to move down.

GOOG logo

Alphabet Inc. Class C Capital Stock

GOOG

Alphabet is a holding company that wholly owns internet giant Google. The California-based company derives slightly less than 90% of its revenue from Google services, the vast majority of which is advertising sales. Alongside online ads, Google services houses sales stemming from Google's subscription services (YouTube TV and YouTube Music, among others), platforms (sales and in-app purchases on Play Store), and devices (Chromebooks, Pixel smartphones, and smart home products such as Chromecast). Google's cloud computing platform accounts for roughly 10% of Alphabet's revenue. The firm's investments in up-and-coming technologies such as self-driving cars (Waymo), health (Verily), and internet access (Google Fiber) make up the rest.

Market cap 3.6T · 190,820 employees

CMCSA logo

Comcast Corp

CMCSA

Comcast is made up of three parts. The core cable business owns networks capable of providing television, internet access, and phone services to 65 million US homes and businesses, or nearly half of the country. The firm provides services to about 47% of the locations in this territory. Comcast acquired NBCUniversal from General Electric in 2011. Following the spinoff of several cable networks, including CNBC, MSNBC, and USA, NBCU now consists of the NBC network, several local NBC affiliates, Bravo, the Peacock streaming platform, Universal Studios, and several theme parks. Finally, Sky, acquired in 2018, is a large television provider in the UK and Italy.

Market cap 99.5B · 179,000 employees

Apr 9, 2021 — Apr 7, 2026Daily1,254 observationsStockStockTechnologyCommunication

Time Series

Rebased to 100

Green: GOOGGray: CMCSA36 of 1,254 points (sampled)

Who Moves First

in sync

GOOG and CMCSA tend to move at the same time.

Best correlation after shifting: -0.497 (13 shifts scanned)

Do They Crash Together?

Correlation by Market Regime

How these series behave when markets are rising, falling, or diverging. A correlation that holds in drawdowns is very different from one that only works in rallies.

Both Rising

-0.097

14 periods · Return correlation when both series rose

Both Falling

-0.479

9 periods · Return correlation when both series fell

Diverging

-0.426

12 periods · Return correlation when series moved apart

R-Squared

24.7%

Share of variance in one series explained by the other.

Trend Agreement

60.0%

How often both series moved in the same direction period-to-period.

Overlap Quality

1,254

Deep shared window — 1,254 usable pairs.

Significance

p < 0.001

95% CI: [-0.537, -0.454]

Scatter

XY Regression

72.7100150200250300326.924.76253035404550556061.86Alphabet Inc. Class C Capital StockComcast CorpData pointsFit (r = -0.497)

Pipeline

Data quality details

Pipeline Summary

1,254 paired observations survived the daily window.

Raw input

1,254

1,254

Normalized

1,254

1,254

Prepared

1,254

1,254

Aligned

1,254

1,254

Invalid removed

0

A: 0 / B: 0

Duplicates removed

0

A: 0 / B: 0

Alignment drops

0

A: 0 / B: 0

Series A

GOOG logo

Alphabet Inc. Class C Capital Stock

GOOG

Market cap 3.6T · 190,820 employees

Stock · 1,254 raw → 1,254 prepared

Series B

CMCSA logo

Comcast Corp

CMCSA

Market cap 99.5B · 179,000 employees

Stock · 1,254 raw → 1,254 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

11

Estimated crossover points between normalized spreads.

Slope

-0.0694

Linear regression slope.

Intercept

51.8821

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 3 hours ago · ID: stock-goog-vs-stock-cmcsa-daily-20260408-0weyrv